package com.itheima.day10.ZuoYe;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class ZuoYe4 {
    public static File jiami(File file) throws Exception {
        FileInputStream fis = new FileInputStream(file);
        int x = fis.read();
        while (x != -1) {
            x = x ^ 5;
            System.out.print((char) x);
            x = fis.read();
        }
    return null;}
}
